参数资料
型号: AS3517-T
厂商: ams
文件页数: 27/94页
文件大小: 0K
描述: IC CODEC AFE AUDIO STER 81-CTBGA
标准包装: 2,000
类型: 音频编解码器
应用: 便携式音频,电话
安装类型: 表面贴装
封装/外壳: 81-TFBGA
供应商设备封装: 81-CTBGA(9x9)
包装: 带卷 (TR)
AS3517 V17
Data Sheet, Confidential
2003-2007, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved.
www.austriamicrosystems.com
9.2 Power Management Functions
9.2.1
Low Drop Out Regulators
General
These LDO’s are designed to supply sensitive analogue circuits, audio devices, AD and DA converters, micro-controller and other
peripheral devices.The design is optimised to deliver the best compromise between quiescent current and regulator performance for
battery powered devices.
Stability is guaranteed with ceramic output capacitors of 1μF +/-20% (X5R) or 2.2μF +100/-50% (Z5U). The low ESR of these caps
ensures low output impedance at high frequencies. Regulation performance is excellent even under low dropout conditions, when the
power transistor has to operate in linear mode. Power supply rejection is high enough to suppress high ripple on the battery at the output.
The low noise performance allows direct connection of noise sensitive circuits without additional filtering networks. The low impedance of
the power device enables the device to deliver up to 150mA even at nearly discharged batteries without any decrease of performance.
Figure 18 LDO Block Diagram
LDO1
This LDO generates the analog supply voltage used for the AFE itself.
Input voltage is BVDD
Output voltage is AVDD (typ. 2.9V)
Driver strength: 200mA
It is set to a fixed output voltage of 2.9V, 200mAmax. It supplies the analog part of the AFE. Additional external loads are possible but most
not exceed the supply ratings in total together with the operating internal blocks. Further the external load must not induce noise to the
sensitive AVDD supply pin.
LDO2
This LDO generates the digital supply voltage used for the AFE itself.
Input Voltage is BVDD
Output Voltage is DVDD (typ. 2.9V)
Driver strength: 200mA
It is set to a fixed output voltage of 2.9V, 200mAmax. It supplies the digital part of the AFE. Additional external loads are possible but most
not exceed the supply ratings in total together with the operating internal blocks. Further the external load must not induce noise to the
DVDD supply pin but is not as critical as AVDD.
LDO3 & LDO4
These LDO can used to generate the periphery voltage for the digital processor or other external components (e.g. ext. DAC, USB-PHY,
SD-Cards, NAND-Flashes, FM-Tuner …)
Input Voltage BVDD
Output Voltage is PVDD1 & PVDD2 (1.2 to 3.5V)
Default value at start-up is defined by VPROG1 and VPROG2 pins
Driver strength: 200mA
Revision 1v3
32
- 93
ams
AG
Technical
content
still
valid
相关PDF资料
PDF描述
AS3543-ECTP IC CODEC AUDIO FRONT END 68CTBGA
ASM2I9940LG-32LT IC CLK BUFFER 2:18 250MHZ 32LQFP
ASM3P2780AF-06OR IC FREQ MOD 4X EMI REDUCT 6TSOP
AT42QT1011-MAH IC SENSR TOUCH/PROX 1CH 8-UDFN
AT42QT2161-MMU IC TOUCH SENSOR 16KEY 28QFN
相关代理商/技术参数
参数描述
AS3518 功能描述:IC CODEC AFE AUDIO STER 64-CABGA RoHS:是 类别:集成电路 (IC) >> 线性 - 音频处理 系列:- 其它有关文件:STA321 View All Specifications 标准包装:1 系列:Sound Terminal™ 类型:音频处理器 应用:数字音频 安装类型:表面贴装 封装/外壳:64-LQFP 裸露焊盘 供应商设备封装:64-LQFP EP(10x10) 包装:Digi-Reel® 其它名称:497-11050-6
AS3518-ECTP 功能描述:IC CODEC AFE AUDIO STER 64-CABGA RoHS:是 类别:集成电路 (IC) >> 线性 - 音频处理 系列:- 其它有关文件:STA321 View All Specifications 标准包装:1 系列:Sound Terminal™ 类型:音频处理器 应用:数字音频 安装类型:表面贴装 封装/外壳:64-LQFP 裸露焊盘 供应商设备封装:64-LQFP EP(10x10) 包装:Digi-Reel® 其它名称:497-11050-6
AS3518-ECTS 功能描述:IC AUDIO FRONT END STER 64CTBGA RoHS:是 类别:集成电路 (IC) >> 线性 - 音频处理 系列:- 其它有关文件:STA321 View All Specifications 标准包装:1 系列:Sound Terminal™ 类型:音频处理器 应用:数字音频 安装类型:表面贴装 封装/外壳:64-LQFP 裸露焊盘 供应商设备封装:64-LQFP EP(10x10) 包装:Digi-Reel® 其它名称:497-11050-6
AS3518-T 功能描述:IC CODEC AFE AUDIO STER 64-CABGA RoHS:是 类别:集成电路 (IC) >> 线性 - 音频处理 系列:- 其它有关文件:STA321 View All Specifications 标准包装:1 系列:Sound Terminal™ 类型:音频处理器 应用:数字音频 安装类型:表面贴装 封装/外壳:64-LQFP 裸露焊盘 供应商设备封装:64-LQFP EP(10x10) 包装:Digi-Reel® 其它名称:497-11050-6
AS351R040 制造商:AMETHERM 制造商全称:AMETHERM Circuit Protection Thermistors 功能描述:Resistance @ 25°c